Dormer Pramet A110 5.20 mm HSS ST STRAIGHT SHANK LONG SERIES DRILL DIN 340

The Dormer Pramet A110 5.20 mm HSS straight shank long series drill is engineered for depth, precision, and reliable performance in metalworking. Sized at 5.20 mm in diameter and built to the DIN 340 standard, this long-series drill brings an extended reach to your toolkit without compromising rigidity. A conventional 118° point delivers a strong start and remains easy to re-sharpen, while a steam oxide finish helps keep the cutting edge clean from built-up material during successive holes.

Diameter 5.20 mm, length, and compatibility with common chucks are matched to real-world drilling tasks, making this drill a dependable choice for both workshop and production environments.

• 118° conventional point provides a robust entry that’s easy to re-sharpen, supporting accurate starts and consistent hole geometry across repeated workpieces.
• Steam oxide finish reduces workpiece material adhesion to the cutting edge, helping maintain sharpness and extend edge life across multiple holes.
• Long series with straight shank designed for increased reach while remaining compatible with standard chucks and holders, ideal for deeper holes and tight cavities.
• Long length for depth, DIN 340 overall length typically around 132 mm with a flute length near 87 mm for 5.2 mm diameter, enabling six-times depth (6×D) drilling in steel without pecking in many setups.
• Premium HSS material handles drilling across a range of metals, including steel, aluminium, and stainless steel, providing versatility in a single drill bit.
• Versatile use suitable for both hand-held and machine drilling applications, making it a practical asset in workshops, fab shops, and maintenance environments.

The A110 long-series drill is an excellent choice when you need dependable performance from a compact diameter with extended reach. Typical applications include drilling deeper holes in steel manifolds, aluminium housings, and stainless components where access is limited or hole depth exceeds standard bit length. Its easy re-sharpening characteristics and DIN 340 compliance help you maintain productivity and consistency across batches.

Pro tips for best results:

• Match feed rate and cutting speed to the material: slower feed and appropriate speeds preserve edge life in steel and stainless steel.
• Use steady, uniform pressure and avoid sudden shocks to prevent deflection in long-reach bores.
• Apply a compatible coolant or cutting fluid to minimize heat and maintain cut quality during extended drilling depths.
• Inspect the edge periodically and re-sharpen as needed to sustain accurate hole sizes and smooth finishes.